Community Development


San Mateo City Hall
330 West 20th Avenue
San Mateo, CA 94403



The Department of Community Development (CDD) has broad responsibilities focused on long-range planning, review of applications for new development, maintenance of neighborhoods, code enforcement, and planning.

Five divisions work together to accomplish these goals and all division offices are located at City Hall:
  • CDD Administration
  • Building Safety
  • Code Enforcement
  • Neighborhood Improvement and Housing
  • Planning

Administrative Office 

(650) 522-7200

(650) 522-7201

(650) 522-7172

(650) 522-7171

Plan check services are available Monday - Friday from 9:30am - 11:30am at building counter.

Counter hours:
  • Monday: 8:00am - 5:00pm
  • Tuesday: 8:00am - 5:00pm 
  • Wednesday: 8:00am - 5:00pm 
  • Thursday*: 9:00am - 5:00pm 
  • Friday: 8:00am - 5:00pm

*Counter is closed on Thursdays from 8:00am-9:00am.

The Public Counter is closed from 4:00pm - 5:00pm Monday through Friday except for resubmittals and information. Transactions involving payments will not be processed.

Code Enforcement 

(650) 522-7150

(650) 522-7221


Neighborhood Improvement and Housing 

(650) 522-7220

(650) 522-7221

Planning Division 

330 West 20th Avenue
San Mateo, CA 94403

(650) 522-7212

(650) 522-7201

Calls to the Planning Division are returned by 5:00 p.m. the next business day.

For immediate service
, please visit us at City Hall. 
Planners are available during the following hours:  

Monday: 8:00 a.m.-5:00 p.m.
Tuesday: 12:30 p.m.-5:00 p.m.*
Wednesday-Friday 8:00 a.m.-5:00 p.m.

*Planning Counter is closed on Tuesdays from 8:00 a.m.-12:30 p.m. for staff meetings.

The Public Service Counter is closed from 4:00 p.m.-5:00 p.m. Monday-Friday except for resubmittals and information requests. New planning applications and requests for neighborhood mailing labels will not be processed during this hour.